N.Y. Pub. Health Law § 455

§ 455. Hospitals; special policemen; powers and duties. 1. The\ndirector of each hospital in the department may designate attendants or\nother employees to act as special policemen whose duty it shall be under\nthe orders of the director to protect the grounds, buildings and\npatients of the hospital and to eject therefrom disorderly persons. Such\nattendants and employees, acting as special policemen, shall possess all\nthe powers of peace officers, as set forth in section 2.20 of the\ncriminal procedure law, on the grounds and premises.\n 2. The designation of such attendants and employees as special\npolicemen in pursuance hereof, shall not be deemed to supersede, on the\ngrounds and premises of such hospital, the authority of peace or police\nofficers of the jurisdiction within which such hospital is located.\n